Overhead line system hard cross beam connected in welded manner and construction method thereof

A welding connection and construction method technology, which is applied in the processing of building materials, overhead lines, building types, etc., can solve the problems of complex construction process requirements, difficult construction, and many processes, so as to eliminate the phenomenon of rework, simplify the construction process, Guarantee the effect of construction accuracy

Pending Publication Date: 2019-08-20
ELECTRICITY AFFAIR ENG COMPANY OF CHINA RAILWAY NO 8 ENG GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Compared with the traditional flange-connected hard beam, the welded door-shaped hard beam has the advantages of good rigidity and no deformation, but its construction process requirements are more complicated, and there are many processes. The welding and adjustment processes need to be completed at high altitude. Construction is difficult

Method used

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  • Overhead line system hard cross beam connected in welded manner and construction method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A construction method of a welded catenary hard beam, comprising the following steps:

[0034] Step 1: Foundation pouring, use theodolite to measure to ensure that the centerlines of each foundation are in a straight line, and use a level to measure the elevation of each foundation, and use a laser rangefinder and a level to measure the center between two adjacent foundations distance;

[0035] Step 2: Calculate the laxity required for the crossbeam of the hard crossbeam according to the vertical load received by the hard crossbeam under normal operating conditions. The vertical load includes the self-weight of the crossbeam, the maintenance load and the static load. The static load is a suspension installation After the catenary, the load generated due to the self-weight of the catenary;

[0036] Step 3: According to the foundation elevation measured in Step 1, determine the height of each steel column of the hard beam and perform prefabrication;

[0037] Step 4: Acc...

Embodiment 2

[0043] Such as figure 1 As shown, a kind of catenary hard beam connected by welding includes several steel columns, and the steel columns include two side columns 1 and several intermediate columns 2, and column top columns 3 are arranged on the top of the intermediate columns 2 . The catenary hard crossbeam also includes several crossbeams, and the crossbeam includes a crossbeam side section 6 and a crossbeam straight section 7 , and the crossbeam side section 6 and the crossbeam straight section 7 are assembled and connected by connecting sleeves 4 .

[0044] Both the steel column and the crossbeam are prefabricated structural parts, the height of the steel column is determined according to the measured elevation of the foundation 8, the length of the crossbeam is determined according to the measured center distance between the two foundations 8, and the crossbeam The negative sag is determined according to the vertical load on the beam under normal operating conditions. T...

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Abstract

The invention discloses an overhead line system hard cross beam connected in a welded manner and a construction method thereof. A hard cross beam comprises a plurality of steel columns. A cross beam is connected between every two steel columns. The steel columns and the cross beams are prefabricated components. The height of the steel columns is determined according to the basis elevation measuredand obtained. The length of the cross beams is determined according to the center distance of two bases measured and obtained. The negative spread degree of the cross beams is determined by the vertical load borne by the cross beams under the working condition of normal use. The construction method comprises the steps that base pouring is carried out; the negative spreading degree needed by the cross beams is calculated; the height of each steel column of the hard cross beam is determined, and the steel columns are prefabricated; the length of each cross beam of the hard cross beam is determined, and the cross beams are prefabricated according to the needed negative spreading degree; the steel columns are fixedly installed on the base; the cross beams are transferred in place, and the length of the cross beams is checked again; the cross beams are hoisted, the cross beams and the steel columns are connected temporarily in a bolt manner, then a hoisting vehicle is utilized for carryingout second-time bolt connecting after adjusting the cross beams to the needed negative spread degree, and finally, welding connection is carried out on the connecting portion.

Description

technical field [0001] The invention relates to a catenary hard beam, in particular to a welded catenary hard beam and a construction method thereof. Background technique [0002] Compared with the traditional flange-connected hard beam, the welded door-shaped hard beam has the advantages of good rigidity and no deformation, but its construction process requirements are more complicated, and there are many processes. The welding and adjustment processes need to be completed at high altitude. Construction is more difficult. Contents of the invention [0003] The object of the present invention is to overcome the above-mentioned deficiencies existing in the prior art, and provide a kind of welded catenary hard beam and its construction method. [0004] In order to realize the above-mentioned purpose of the invention, the present invention provides the following technical solutions: [0005] A construction method of a welded catenary hard beam, comprising the following step...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04H12/00E04H12/08E04G21/00B60M1/28
CPCB60M1/28E04G21/00E04H12/00E04H12/08B60M1/20
Inventor 邓诚黄河胡基冬白林沈弓召刘国辉张维陈晶
Owner ELECTRICITY AFFAIR ENG COMPANY OF CHINA RAILWAY NO 8 ENG GRP
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